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C1197 on the 2025 GMC Sierra

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name C1197
PIT6304D2025-05-20. Service bulletin. This Preliminary information communicates a diagnostic Aid from root causing DTC: C1197 sym 92 caused by a pinched air inlet hose to the suspension compressor air leveling system and update the software in the K5 automatic level ride control module.
PIT6304C2025-04-29. Service bulletin. This Preliminary information communicates a diagnostic Aid from root causing DTC: C1197 sym 92 caused by a pinched air inlet hose to the suspension compressor air leveling system and update the software in the K5 automatic level ride control module.
PIT6304B2025-04-01. Service bulletin. This Preliminary information communicates a diagnostic Aid from root causing DTC: C1197 sym 92 caused by a pinched air inlet hose to the suspension compressor air leveling system and update the software in the K5 automatic level ride control module.
PIT6304A2025-02-03. Service bulletin. This Preliminary information communicates a diagnostic Aid from root causing DTC: C1197 sym 92 caused by a pinched air inlet hose to the suspension compressor air leveling system.
PIT63042024-12-17. Service bulletin. This Preliminary information communicates a diagnostic Aid from root causing DTC: C1197 caused by a pinched air inlet hose to the suspension compressor air leveling system.

5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.